A woman walks her dog past the hand-painted vinyl balls floating in the MacArthur Park Lake as part of a large-scale public arts installation organized by the Portraits of Hope charity in Los Angeles, California on August 26, 2015. The work titled ``The Spheres at MacArthur Park,'' involves filling the park's 8.39-acre lake with about 3,000 balls, each 4 to 6 feet in diameter and covered in bright floral and fish patterns.(Photo by Ringo Chiu/PHOTOFORMULA.com)